Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation

Reference : Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation


	Document type :	Scientific journals : Article
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Physics
	To cite this reference:	http://hdl.handle.net/10993/20261

Title :	Detecting nonlocal Cooper pair entanglement by optical Bell inequality violation
Language :	English
Author, co-author :	Nigg, Simon E. [> >]
	Tiwari, Rakesh P. [> >]
	Walter, Stefan [> >]
	Schmidt, Thomas [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit > ; University of Basel > Department of Physics]
Publication date :	2015
Journal title :	Physical Review. B, Condensed Matter
Publisher :	American Institute of Physics
Volume :	91
Pages :	094516
Peer reviewed :	Yes (verified by ORBi^lu)
ISSN :	0163-1829
e-ISSN :	1095-3795
City :	New York
Country :	NY
Abstract :	[en] Based on the Bardeen Cooper Schrieffer (BCS) theory of superconductivity, the coherent splitting of Cooper pairs from a superconductor to two spatially separated quantum dots has been predicted to generate nonlocal pairs of entangled electrons. In order to test this hypothesis, we propose a scheme to transfer the spin state of a split Cooper pair onto the polarization state of a pair of optical photons. We show that the produced photon pairs can be used to violate a Bell inequality, unambiguously demonstrating the entanglement of the split Cooper pairs.
Permalink :	http://hdl.handle.net/10993/20261
Other URL :	http://link.aps.org/doi/10.1103/PhysRevB.91.094516
Commentary :	arXiv:1411.3945 [cond-mat.mes-hall]

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